A high surface area nanocrystalline alumina with tailoring texture by mixed template

作者：Li Yongfeng; Su Jiaojiao; Ma Jinghong; Yu Feng; Li Ruifeng^*

来源：Materials Letters, 2015, 153: 165-167.

DOI：10.1016/j.matlet.2015.04.018

• Porous materials
• Texture
• Nanocrystalline alumina
• Evaporation-induced self-assembly
• Super-microporous
• Large surface area

We report a facile synthesis of porous alumina (PA) which enables control of pore structure using a mixture of fatty alcohol polyoxyethylene ether (AEO-7) and poly (alkylene oxide) triblock copolymers (P123) as the template via an evaporation-induced self-assembly (EISA) pathway associated with thermal treatment. N-2 adsorption-desorption results show that using over 80 wt% AEO-7, the obtained materials are super-microporous (pore size in the range of 1-2 nm), then if further decrease in the AEO-7 content will transform to mesopore (pore size > 2 nm). When the mass fraction of P123 is less than 20 wt%, the material has a large surface area (more than 650 m(2)/g) and nanocrystalline phase is obtained at 400 degrees C. Even after calcination at 750 degrees C for 1 h, the sample of mass fraction 20 wt% P123 still exhibits a high specific area of 450 m(2)/g with large microporosity.

• 出版日期2015-8-15
• 单位太原理工大学